[El-errata] New Ksplice updates for UEKR4 4.1.12 on OL6 and OL7 (ELSA-2019-4619)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2019-4619 can now be patched using Ksplice
CVEs: CVE-2017-13305 CVE-2017-7308 CVE-2018-14634

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2019-4619.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2019-4619.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running UEKR4 4.1.12 on
OL6 and OL7 install these updates.

On systems that have "autoinstall = yes" in /etc/uptrack/uptrack.conf,
these updates will be installed automatically and you do not need to
take any action.

Alternatively, you can install these updates by running:

# /usr/sbin/uptrack-upgrade -y


DESCRIPTION

* Data corruption on ext4 filesystems while performing direct AIO.

Under certain conditions, it is possible for unaligned direct AIO
operations on an ext4 filesystem to corrupt previously written
filesystem blocks.  A malicious user could potentially exploit this flaw
to corrupt filesystem data.

Orabug: 29553371


* CVE-2017-13305: Information leak in encrypted keys subsystem.

Providing the encrypted keys subsystem with a shorter-than-expected
master key description could cause the key validation routine to read
beyond the end of the buffer, potentially exposing kernel memory.

Orabug: 29591025


* Add support for runtime configuration of target LIO inquiry strings.

This adds support for configuring the vendor, model and revision LIO
inquiry strings for target devices on the system through configfs.

Orabug: 29344862


* NULL pointer dereference in NFSv4.1 fatal signal handling.

A missing NULL pointer check could result in a NULL pointer dereference
and kernel crash in the NFSv4.1 client when handling a fatal signal.

Orabug: 29617508


SUPPORT

Ksplice support is available at ksplice-support_ww at oracle.com.